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-rw-r--r--arch/arm/kernel/smp.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index 344e52b16c8..e7f92a4321f 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -318,9 +318,13 @@ asmlinkage void __cpuinit secondary_start_kernel(void)
smp_store_cpu_info(cpu);
/*
- * OK, now it's safe to let the boot CPU continue
+ * OK, now it's safe to let the boot CPU continue. Wait for
+ * the CPU migration code to notice that the CPU is online
+ * before we continue.
*/
set_cpu_online(cpu, true);
+ while (!cpu_active(cpu))
+ cpu_relax();
/*
* OK, it's off to the idle thread for us